Factors of 342
Factors of 342 are the list of integers that we can split evenly into 342. There are 12 factors of 342 of which 342 itself is the biggest factor and its prime factors are 2, 3, 19 The sum of all factors of 342 is 780.
- All Factors of 342: 1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171 and 342
- Prime Factors of 342: 2, 3, 19
- Prime Factorization of 342: 21 × 32 × 191
- Sum of Factors of 342: 780
1. | What Are the Factors of 342? |
2. | Factors of 342 by Prime Factorization |
3. | Factors of 342 in Pairs |
4. | FAQs on Factors of 342 |

What are Factors of 342?
Factors of 342 are pairs of those numbers whose products result in 342. These factors are either prime numbers or composite numbers.
How to Find the Factors of 342?
To find the factors of 342, we will have to find the list of numbers that would divide 342 without leaving any remainder.
- 342/57 = 6; therefore, 57 is a factor of 342 and 6 is also a factor of 342.
- 342/18 = 19; therefore, 18 is a factor of 342 and 19 is also a factor of 342.
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- Factors of 100 - The factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, 100
- Factors of 30 - The factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30
- Factors of 41 - The factors of 41 are 1, 41
- Factors of 144 - The factors of 144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
- Factors of 72 - The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
Factors of 342 by Prime Factorization
- 342 ÷ 2 = 171
Further dividing 171 by 2 gives a non-zero remainder. So we stop the process and continue dividing the number 171 by the next smallest prime factor. We stop ultimately if the next prime factor doesn't exist or when we can't divide any further.
So, the prime factorization of 342 can be written as 21 × 32 × 191 where 2, 3, 19 are prime.
Factors of 342 in Pairs
Pair factors of 342 are the pairs of numbers that when multiplied give the product 342. The factors of 342 in pairs are:
- 1 × 342 = (1, 342)
- 2 × 171 = (2, 171)
- 3 × 114 = (3, 114)
- 6 × 57 = (6, 57)
- 9 × 38 = (9, 38)
- 18 × 19 = (18, 19)
Negative pair factors of 342 are:
- -1 × -342 = (-1, -342)
- -2 × -171 = (-2, -171)
- -3 × -114 = (-3, -114)
- -6 × -57 = (-6, -57)
- -9 × -38 = (-9, -38)
- -18 × -19 = (-18, -19)
NOTE: If (a, b) is a pair factor of a number then (b, a) is also a pair factor of that number.
Factors of 342 Solved Examples
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Example 1: How many factors are there for 342?
Solution:
The factors of 342 are too many, therefore if we can find the prime factorization of 342, then the total number of factors can be calculated using the formula shown below.
If the prime factorization of the number is ax × by × cz where a, b, c are prime, then the total number of factors can be given by (x + 1)(y + 1)(z + 1).
Prime Factorization of 342 = 21 × 32 × 191
Therefore, the total number of factors are (1 + 1) × (2 + 1) × (1 + 1) = 2 × 3 × 2 = 12 -
Example 2: Find the Least Common Multiple and Highest Common Factor (HCF) of 342 and 281.
Solution:
The factors of 342 are 1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342 and factors of 281 are 1, 281.
Therefore, the Least Common Multiple of 342 and 281 is 96102 and Highest Common Factor (HCF) of 342 and 281 is 1. -
Example 3: Find if 1, 6, 9, 57, 114, 171 and 265 are factors of 342.
Solution:
When we divide 342 by 265 it leaves a remainder. Therefore, the number 265 is not a factor of 342. All numbers except 265 are factors of 342.
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Example 4: Find the product of all the prime factors of 342.
Solution:
Since, the prime factors of 342 are 2, 3, 19. Therefore, the product of prime factors = 2 × 3 × 19 = 114.
FAQs on Factors of 342
What are the Factors of 342?
The factors of 342 are 1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342 and its negative factors are -1, -2, -3, -6, -9, -18, -19, -38, -57, -114, -171, -342.
What is the Sum of the Factors of 342?
Sum of all factors of 342 = (21 + 1 - 1)/(2 - 1) × (32 + 1 - 1)/(3 - 1) × (191 + 1 - 1)/(19 - 1) = 780
What are Prime Factors of 342?
The prime factors of 342 are 2, 3, 19.
What is the Greatest Common Factor of 342 and 208?
The factors of 342 and 208 are 1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342 and 1, 2, 4, 8, 13, 16, 26, 52, 104, 208 respectively.
Common factors of 342 and 208 are [1, 2].
Hence, the Greatest Common Factor of 342 and 208 is 2.
How Many Factors of 342 are also common to the Factors of 172?
Since, the factors of 342 are 1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342 and the factors of 172 are 1, 2, 4, 43, 86, 172.
Hence, [1, 2] are the common factors of 342 and 172.
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